*The Hajj (Arabic: حجy transliterated: Ḥajj), (Turkish:Hac) is the Pilgrimage to Mecca in Islam. It is the fifth of the Five Pilars in Sunni Islam and one of the ten Branches of Religion in Shi'a Islam. Every able-bodied Muslim who can afford to do so is obliged to make the pilgrimage to Mecca at least once in his or her lifetime. Hajj Day always falls one day before Eid al Adha
***Wikipedia